Insecticide-gun.



E. KROIVIER.

INSECTICIDE GUN.

APPLICATION FILED Aue.3I, 191s.

Patented July 11, 1916.

Em an ammo iiic.

EMANUEL KROMER, OF SPOKANE, WASHINGTON.

INSECTICIDE-G-UN.

1,1H tlL l26.

Application filed August 31, 1915.

To all whom it may concern:

Be it known that I, EMANUEL K110111211, a citizen of the United States, residing at Spokane, in the county of Spokane and State of lVashington, have invented certain new and useful Improvements in Insecticide-Guns, of which the following is a specitication.

This invention relates to improvements in devices for applying insecticide to insects to kill and destroy the latter.

It is one of the objects of this invention to provide a gun, which may be of rifle or pistol form, in which air pressure is utilized to discharge the insecticide in such a manner as to constitute a shot of the insecticide charge.

In the most improved embodiment of my invention, the same is in the form of an air gun or pistol in which the powder is expressed at a high rate of speed and in small quantities by compressed air, and in this connection, it is one of the objects of my invention to provide a gun in which the powder charge is placed in position previous to admission of and in advance of the compressed air by means of which the charge is shot. The charge will always be in position to be discharged by the compressed air before the gun is fired. and in one form of my invention, the charging of the gun is automatic in its action.

It is also a feature of my invention to arrange the device so as to equip common forms of air guns without alteration of the latter to any great extent thereby avoiding the nccessitv of making an entire gun especially for the use of my invention.

Other features and objects of my invention will be more fully described in connection with the accompanying drawings and will. be more atrticularly pointed out in and by the appended claims.

In the drawing:ligure 1. is a viewin side elevation. with parts in section. of an air gun equipped with the device of my invention. Fig. 2. is a longitudinal vertical sectional view of the barrel of the gun on an enlarged scale. Fig. I). is a sectional view on line 2}-2, of Fig. 2. Fig. -l"., is a. sectional view on line -l--t of Fig. 3. Fig. 5. is a sectional view on line 5-5 of Fig. 2.

Like characters designate similar parts throughout the ditl'erent figures of the drawing.

In the particular form shown, I have Specification of Letters Patent.

Patented July 11, rain.

Serial No. 48,194.

illustrated my invention as embodied in a toy gun in which the stock is indicated at 1, and the barrel at 2. A trigger is shown at 3 for controlling a spring actuated piston 4:. The piston 4 is provided with a piston rod 5 and spring abutments 6 are provided in the barrel between which and the piston 4, is interposed an actuating spring 7. The rear end of the piston rod 5 is bent at an angle, as indicated at 8, and extends through a slot 9 in the upper portion .of the barrel 2. A knob 10 afiords a finger grip for the piston -,t whereby the latter may be retracted to place the spring 7 under tension preparatory to initiating air compression for discharge from the gun. The trigger 3 is pivoted at 11 and is provided with a lug 12 adapted to engage a lug 13, on piston rod 5 so that when the piston rod is retracted, it will be held by the trigger and will be released only when the trigger is drawn to the right of Fig. 1. An abutment l l, suitably fixed in the barrel 2, limits movement of the piston 1 toward the muzzle end of the barrel, and a passage 15 atfords communication between the divided portions of the barrel and provides means whereby the compressed air may be forced forwardly by the piston 4-,.

The foregoing construction is not claimed in this application as being specifically new and I will now describe that part of the structure of the gun embodying my novel improvement.

Telescoping the muzzle end of the barrel is an insecticide containing sleeve 16 which is provided with a rear open end 17 and a front closed end 18. Before the sleeve 1(3 is inserted into the barrel 2. it is substantially filled with insecticide and then it is inserted into the barrel 2. as shown in Fig. 2. Means is provided for not only anchoring the container sleeve 16 against displacement but also serving to insure a predetermined position of the sleeve in the barrel when the sleeve is fastened. As illustrated, said means may be in the form of a bayonet joint. the female or slotted member of the joint being formed in the. barrel 2. as indicated at 151. and the male member being formed on the sleeve 10. as indicated at 20. \Vhen the sleeve lti is first inserted. the stud 20 will engage the elongated portion 19 and when the stud 20 reaches the rear portion of the bayonet slot. the sleeve 16 will be rotated until the stud 2t) abuts against the terminal 21. The reason for locking the sleeve in the barrel in a predetermined position, will presently appear. An air tube 22 is shown fixed to the closed end 18 of the sleeve 16, and an opening 23 provides communication between the outer end of said tube 22 and the atmosphere. The remaining end of said tube 22, as indicated at 24, extends into an enlarged portion of passage 15 and communicates with the latter. Thus it will, be seen that as the piston 4 is forced against the abutment 14, by the spring 7, air in the relatively enlarged piston or rear portion of the barrel 2 would be compressed and forced at a rapid rate through passage 15 and through tube 22. Now tube 22 is provided with a charge opening 25 which opens into sleeve 16 so that the powder in the latter will be free to descend into the tube in predetermined charging quantities dependent upon the size of charge opening or hole 25. Because of the bayonet joint means employed in fastening the sleeve 16 in the barrel 2, it will be seen that the charge opening 25 will always be uppermost. A leather or a like waslfer 26 may be fitted on the rear end of tube 22 so as to assist in forming a tight connection between the end portion 24 of said tube and the passage 15. Because of the fact that the opening 25 faces upwardly, I desirably provide means for preventing the powder from being located in the bottom of tube 16, near the forward end, as such powder would be out of range of opening 25.

In the most improved embodiment, I build up the lower forward portion of the sleeve 16 with lead, as indicated at 27 in the form shown in Figs. 2, 3 and The lead filling will not only form a guide to hold the powder in accessible relation with respect to the opening 25, but it will also assist in securing the tube 22 in case it is not desired to fasten the tube 22 to closed end 18. The powder guide 27 slopes, as indicated at 28, rearWardly of the opening 25, and laterally of said opening 25, the guide 27 is inclined downwardly toward said opening, as indicated at 29-.

It will be seen that practically all of my improved mechanism, is formed in a separate part which is insertible into the barrel of the gun and while I do not limit myself to such specific construction, it will be understood that the same has very appreciable advantages by reason of the fact that it necessitates very little alteration of air guns now on the market in order to equip the same with the device of my invention.

Now a most important feature of my invention resides in the means whereby the charge of insecticide is automatically fed by reason of the impact of the piston 4 and the suction caused by the passage of compressed air of the preceding shot through tube 22. Prior to passage of compressed air and preferably at a point in advance of the compressed air, there will always be a charge ready to be shot. Thus the insecticide will be truly propelled by the compressed air and will to a certain extent be sprayed at the muzzle so that if the gun is aimed at the fly or other insect in anywhere like a true range, the insecticide will hit the insect. I prefer to use a powder which is not in itself poisonous but which is of such a character as to completely fill up and clog the respiratory or breathing cells of the fly and cause its death by suifocation. l urthermore, the shock of compression of the air against the fly will cause the latter to be stunned, niomentarily, and the subsequent resumption of rapid respiration will cause suction of the powder into the breathing cells of the fly in such a manner as to effectively choke up these cells.

I have found that in practice a gun of this type will shoot from one hundred to one hundred fifty times without lowering the muzzle end to cause the powder to flow toward the closed end 18 of the sleeve 16. However, after the powder has been half usedup, the muzzle end of the gun can not only be lowered, and slightly tapped or tamped on its lower end on the floor, so as to shift the powder in the rear end of the sleeve 16 toward the opening 25.

I am aware that insecticide powder has been forcibly discharged by spraying devices, but I believe that I am broadly new in the idea of utilizing an air gun to shoot an insecticide powder.

\Vhile I have herein shown and described one specific form of my invention I do not limit myself thereto, but expect to 11%. it in any form to which it may be applicable. Neither do I limit myself to any special kind of insecticide.

I claim 1. In an air gun for shooting insecticide, a. barrel provided with an abutment having an air passage therein and disposed rearwardly of the muzzle end of the barrel, a spring operated trigger controlled air piston movable against said abutment, an insecticide holding sleeve movable into said barrel through theunuzzle end of the latter and having-its outer end closed, and an air tube open to the outer air through said closed end of the sleeve and communicating with said passage, said tube having a charge hole opening to theinterior of said sleeve for admission of a charge of 1nsecti- -cide to said tube at a point in advance of wardly of the muzzle end of the gun. a

spring controlled air piston movable against said abutment to force air thcretbrough, an

insecticide charging sleeve insertible into said barrel through the muzzle end of the latter for holding the insecticide, and an air tube open to the outer air at the muzzle end of said barrel and communicating with said abutment air passage, said tube having a charge opening and constantly open for ingress of the insecticide therethrough into said tube from said sleeve, substantially as described.

3. In an air gun for shooting insecticide, a gun barrel, an insecticide holding sleeve insertible into said barrel through the muzzle end of the latter, an air tube open to the outer air at the muzzle end of said barrel and having a charge opening in constant communication with the interior of said sleeve for ingress of the insecticide into said tube, and means for forcing air through said tube to shoot the powder therefrom, substantially as described.

4. In an air gun for shooting insecticide, a barrel, closure means for the muzzle end of the barrel 'to permit of insertion into the barrel of a load of insecticide for a plurality shot, an air tube in'said barrel communicating at its forward end with the outer air through said closure and having an opening between its ends in constant communication with the insecticide in said barrel for ingress of the insecticide into said tube, and means for supplying air under pressure to the remaining end of said tube to shoot the insecticide through the muzzle end of said tube, substantially as described.

5. In an air gun for shooting a powdered material, a barrel, closure means for the muzzle end of the barrel to permit of insertion of a load of the powdered material into said barrel sufficient for a plurality of shots, a tube communicating with the outer air near the muzzle end of the gun and having an opening between its ends for ingress of the powdered material into said tube from the interior of the barrel, means for supplying compressed air to the rear end of said tube to shoot the powdered material all out of the muzzle end of said tube, and means for causing the compressed air to enter the rear end and pass through said tube, substantially as described.

6. In an air gun for shooting a powdered material, a barrel, a charge container for the material insertible into said barrel through the muzzle end of the latter, and mechanism for shooting powder out of said container from the muzzle end ofthe gun, substantially as described.

7. In an air gun for shooting a powdered material, a barrel, a charge container in sertible into said barrel through the muzzle end of the latter, atube fixed to said container and communicating with the outer air at the forward end of the container and opening to the interior of the container between the ends of said tube, a partition insaid barrel positioned to support the rear end of said tube when said container is inserted into a final position into said barrel and said partition closing said barrel to forward air passage except into the rear end of said tube, and mechanism for' supplying compressed air to said tube to shoot the powdered material outwardly through the forward end of said tube, substantially as described.

8. In an air gun for shooting a powdered material, a barrel, a charge container insertible into said barrel, a tube fixed in said container and communicating with the outer air through said container and having an upwardly facing charge opening for receiving a charge from the interior of said container, a guide in said container sloping upwardly toward said charge opening and sloping downwardly toward said charge opening, and means for supplying compressed air to said tube, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

EMANUEL KROMER. lVitnesses DAVE E. BURNS, GRACE F. KRoMER. 

